* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1a2a6c;
            --secondary: #b21f1f;
            --accent: #fdbb2d;
            --bg: #f8f9fc;
            --text: #1e1e2a;
            --light: #ffffff;
            --gray: #6b7280;
            --border: #e5e7eb;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            --radius: 12px;
            --max-w: 1200px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s;
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: var(--light);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 12px 0;
            border-bottom: 3px solid var(--accent);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .my-logo i {
            -webkit-text-fill-color: var(--accent);
            font-size: 2rem;
        }
        .my-logo:hover {
            opacity: 0.85;
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .main-nav {
            display: flex;
            gap: 8px;
            list-style: none;
            flex-wrap: wrap;
        }
        .main-nav a {
            padding: 6px 14px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text);
            transition: all 0.25s;
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
        }
        .breadcrumbs {
            padding: 14px 0 6px;
            font-size: 0.85rem;
            color: var(--gray);
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .breadcrumbs a {
            color: var(--gray);
            font-weight: 500;
        }
        .breadcrumbs a:hover {
            color: var(--primary);
        }
        .breadcrumbs span {
            color: var(--secondary);
            font-weight: 600;
        }
        .main-content {
            padding: 30px 0 50px;
        }
        .article-header {
            margin-bottom: 40px;
            text-align: center;
        }
        .article-header h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 900;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .article-header .meta {
            color: var(--gray);
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-header .meta i {
            margin-right: 4px;
        }
        .last-updated {
            background: var(--accent);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.85rem;
            display: inline-block;
        }
        .feature-image-wrap {
            margin: 30px 0 40px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-image-wrap img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .feature-image-wrap figcaption {
            padding: 10px 18px;
            font-size: 0.85rem;
            color: var(--gray);
            background: var(--light);
            border-top: 1px solid var(--border);
        }
        .content-section {
            background: var(--light);
            border-radius: var(--radius);
            padding: 30px 32px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
            transition: transform 0.2s;
        }
        .content-section:hover {
            transform: translateY(-2px);
        }
        .content-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
            border-left: 5px solid var(--accent);
            padding-left: 16px;
        }
        .content-section h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--secondary);
            margin: 24px 0 10px;
        }
        .content-section h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin: 18px 0 8px;
        }
        .content-section p {
            margin-bottom: 16px;
            text-align: justify;
        }
        .content-section ul,
        .content-section ol {
            margin: 12px 0 16px 24px;
        }
        .content-section li {
            margin-bottom: 8px;
        }
        .content-section .highlight-box {
            background: #f0f4ff;
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
        }
        .content-section .highlight-box strong {
            color: var(--secondary);
        }
        .inline-links {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 6px 12px;
            background: #f9fafb;
            padding: 12px 18px;
            border-radius: 8px;
            margin: 12px 0;
            font-size: 0.9rem;
        }
        .inline-links a {
            font-weight: 600;
        }
        .search-section {
            background: var(--light);
            border-radius: var(--radius);
            padding: 30px 32px;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }
        .search-section h2 {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border: 2px solid var(--border);
            border-radius: 40px;
            font-size: 1rem;
            outline: none;
            transition: border 0.3s;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background: var(--secondary);
            transform: scale(1.02);
        }
        .interaction-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 30px;
        }
        @media (max-width:768px) {
            .interaction-grid {
                grid-template-columns: 1fr;
            }
        }
        .interaction-card {
            background: var(--light);
            border-radius: var(--radius);
            padding: 28px 30px;
            box-shadow: var(--shadow);
        }
        .interaction-card h2 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .interaction-card label {
            font-weight: 600;
            display: block;
            margin: 12px 0 4px;
        }
        .interaction-card input,
        .interaction-card textarea,
        .interaction-card select {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: 8px;
            font-size: 0.95rem;
            font-family: var(--font);
            outline: none;
            transition: border 0.3s;
        }
        .interaction-card input:focus,
        .interaction-card textarea:focus,
        .interaction-card select:focus {
            border-color: var(--primary);
        }
        .interaction-card textarea {
            min-height: 100px;
            resize: vertical;
        }
        .interaction-card .btn-submit {
            margin-top: 14px;
            padding: 12px 28px;
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: 40px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background 0.3s, transform 0.2s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .interaction-card .btn-submit:hover {
            background: var(--primary);
            transform: scale(1.02);
        }
        .star-rating {
            display: flex;
            gap: 6px;
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            margin: 8px 0;
        }
        .star-rating i {
            transition: color 0.2s, transform 0.2s;
        }
        .star-rating i.active,
        .star-rating i:hover {
            color: var(--accent);
            transform: scale(1.1);
        }
        .star-rating i:hover~i {
            color: #ddd;
        }
        .friend-links-section {
            background: var(--light);
            border-radius: var(--radius);
            padding: 28px 30px;
            margin: 30px 0 20px;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--accent);
        }
        .friend-links-section h2 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        friend-link {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 10px 20px;
            font-size: 0.95rem;
        }
        friend-link a {
            font-weight: 600;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: border 0.25s;
        }
        friend-link a:hover {
            border-bottom-color: var(--accent);
        }
        .site-footer {
            background: var(--primary);
            color: #e0e7ff;
            padding: 30px 0 20px;
            margin-top: 30px;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .site-footer .footer-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .site-footer .copyright {
            font-size: 0.9rem;
            opacity: 0.9;
        }
        .site-footer .copyright strong {
            color: var(--accent);
        }
        .site-footer a {
            color: var(--accent);
            font-weight: 600;
        }
        .site-footer a:hover {
            text-decoration: underline;
        }
        @media (max-width:768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--light);
                padding: 12px 0 16px;
                border-radius: 0 0 var(--radius) var(--radius);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 10px 20px;
                border-radius: 0;
                border-bottom: 1px solid var(--border);
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
            .header-inner {
                align-items: center;
            }
            .content-section {
                padding: 20px 16px;
            }
            .search-section {
                padding: 20px 16px;
            }
            .interaction-card {
                padding: 20px 16px;
            }
            .article-header h1 {
                font-size: 1.8rem;
            }
            .breadcrumbs {
                font-size: 0.78rem;
            }
            .friend-links-section {
                padding: 20px 16px;
            }
            .site-footer .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .star-rating {
                font-size: 1.6rem;
            }
        }
        @media (max-width:480px) {
            .my-logo {
                font-size: 1.4rem;
            }
            .my-logo i {
                font-size: 1.4rem;
            }
            .search-form input {
                min-width: 140px;
                padding: 12px 16px;
            }
            .search-form button {
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .content-section h2 {
                font-size: 1.4rem;
            }
            .content-section h3 {
                font-size: 1.15rem;
            }
        }
        .nav-toggle-icon {
            transition: transform 0.3s;
        }
        .hamburger[aria-expanded="true"] .nav-toggle-icon {
            transform: rotate(90deg);
        }
        .content-section p+ul,
        .content-section p+ol {
            margin-top: -6px;
        }
        .content-section blockquote {
            border-left: 4px solid var(--accent);
            padding: 12px 20px;
            margin: 16px 0;
            background: #fef9e7;
            border-radius: 0 8px 8px 0;
            font-style: italic;
        }
        .content-section blockquote strong {
            color: var(--secondary);
        }
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
            transition: transform 0.3s, background 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 999;
        }
        .scroll-top:hover {
            transform: scale(1.08);
            background: var(--secondary);
        }
        @media (max-width:600px) {
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }